KR20080004007A - Arrangement structure, vertical joint structure and vertical joint method of the unified form-prefabrication steel bar - Google Patents

Abstract

A prefabricated reinforcing bar arrangement structure is provided to minimize the usage of reinforcing bars by arranging connecting bars of vertical and horizontal ladder type truss bars crisscross not to overlap with each other, to heighten work efficiency to the maximum and to shorten a period of work by using a connecting bar of a ladder type truss bar as a form tie. A prefabricated reinforcing bar arrangement structure is formed by placing many ladder type truss bars(110,120) in horizontal and vertical directions and rotating the vertical ladder type truss bars in a 90-degree arc to cross each other and to integrate the ladder type truss bars. The ladder type truss bars are composed of two main reinforcing bars(111,121) placed parallel to each other at a certain distance and many connecting bars(112,122) connected at right angles to the main reinforcing bars, wherein the connecting bars of the horizontal ladder type truss bars are arranged correspondingly to the interval of the arranged vertical truss bars, and the connecting bars of the vertical ladder type truss bars are arranged correspondingly to the interval of the arranged horizontal truss bars, so that the connecting bars of the vertical and horizontal ladder type truss bars are arranged to cross each other not to be overlapped, thereby to form an optimum reinforcement structure for a reinforced concrete structure with minimum quantity of reinforcing bars, and two ends of the connecting bar are projected to the lateral direction of the main reinforcing bars to function as a form tie.

Description

Arrangement structure, vertical joint structure and vertical joint method of the unified Form-Prefabrication steel bar}

Figure 1a shows the pre-assembly step of the formwork integrated line assembly reinforcement structure according to the present invention.

Figure 1b shows after assembling the formwork integrated line reinforcement structure.

Figures 2a to 2d shows a process of integrating and installing the line assembly reinforcement with the wall formwork.

Figure 3 is a schematic diagram of the formwork integrated line assembly rebar vertical connection structure according to the present invention.

Figure 4 is a construction site application example of the formwork integrated line assembly rebar vertical connection structure according to the present invention.

<Description of Major Codes in Drawings>

10: lower freckle 20: upper freckle

11, 21: deformed steel rib 12, 22: deformed steel bar

30 sleeve 31 weld

32: wrinkles 40: slow curing agent

50: stopper

100: reinforcing bar structure

110: horizontal ladder truss bar 111: main bar (horizontal direction)

112: connecting root (horizontal direction)

120: vertical ladder truss bar 121: main bar (vertical)

122: connecting root (vertical direction)

210: rotating assembly 220: base

The present invention relates to a reinforcing bar reinforcement structure for reinforcement of a reinforced concrete tank vertical structure, and more specifically, to minimize the amount of rebar, to maximize the efficiency and work speed of work, and without a separate formwork (form tie) The present invention relates to a reinforcing bar reinforcement structure in which concrete can be reinforced by reinforcing concrete by using reinforcing bars.

Conventionally, the method of reinforcing the rebar and the method of installing the formwork as a separate follow-up process is as follows. First weave one wall formwork, complete the reinforcement and then weave the other wall formwork. At this time, the rebar should be vertically and horizontally reinforcement for the rigidity of the vertical structure, and when the horizontal reinforcement is required for long and unidirectional reinforcement, the time required for reinforcing the rebar was long. On the other hand, it was necessary to install a separate formwork fixture to counter the side pressure generated during the pouring, curing of concrete. In addition, in the case of using a plurality of wall formwork connected to the wall formwork to prevent the connection between the wall formwork and the braces, yoke, joists, etc. to secure the work was required.

According to the conventional reinforcing bar reinforcement method and the method of installing the formwork as described above, the reinforcement reinforcement work is complicated and requires a high level of skill of the operator, because the work is required to fix the brace or yoke for connecting the formwork There was an increase in time and material costs and inconvenience in working.

In particular, since the installation of a separate formwork fixture is required, it is inconvenient to consider the installation position of the formwork fixture in advance when reinforcing the reinforcement, or to avoid the location where the rebar is installed when installing the formwork fixture. Due to the difficulty in shortening, labor productivity was lowered due to the reduction of labor productivity due to nighttime, overnight and stone pipe work for shortening of air.

In addition, the present invention relates to a vertical assembly structure of the line assembly reinforcing bar and the vertical assembly reinforcement method for the construction of reinforced concrete structure, by connecting the reinforcing bars easily and simply, to reduce the number of work steps to improve the workability vertical It relates to the connection structure.

Reinforced concrete is a combination of reinforcing steel and concrete, and the concrete bears the compressive force and the steel bears the tensile force. Reinforced concrete structure installs formwork after reinforcement and reinforces concrete to construct reinforced concrete structure.In the construction process, reinforcement should be constructed by connecting standard products of a certain length as needed. The joint part will be generated. A predetermined tensile force is applied to the joint portion formed between the reinforcing bars and the reinforcing bars, and in order to sufficiently cope with the tensile force, a tight connection state between the bars must be maintained, and this usually includes an overlapping joint, a pressure joint, a mechanical joint using a coupler, and the like. The method is applied.

Overlap joint is a method of reinforcing reinforcing bars and reinforcing bars over the length of the required joint and placing them in a binding line. This has the advantage of easy reinforcement, but when the diameter of the reinforcing bar is large, there is a problem in structural strength because the stress concentration of the reinforcing bars is not matched by the eccentricity, and the joint length of the vertical reinforcement is overlapped with the horizontal form tie. When the concrete member is thin, there is a problem that the cross section of the formwork is narrowed due to overlapping reinforcing bars, so that it is not easy to place concrete and it is difficult to maintain the reinforcement spacing of the reinforcement and the minimum coating thickness of the concrete.

In addition, the method of connecting the reinforcing bars by pressure welding is a method of integrally forming the ends by heating and pressing after joining the ends of the reinforcing bars and the bars. This welding process is long and the heat is applied directly to the rebar, the properties of the iron is changed, and the strength of the heat decreases depending on the speed of cooling, there are many problems, such as difficult to apply.

In order to solve the problems caused in the reinforcing bar joint method by the overlap joint and pressure welding, a conventional bar joint method has been used to mechanically combine the reinforcing bar and the reinforcing bar. When using the conventional mechanical reinforcing bar joint first, it is necessary to form a threaded portion of a predetermined diameter by cutting the end of each reinforcing bar to be connected, and if the threaded portion is formed in each of the reinforcing bars, the two reinforcing bars so that these threads face each other After aligning in a row, fix the reinforcing bar by turning the reinforcing bar in both sides of the coupler having the female thread groove formed on the inner circumferential surface. However, such a conventional reinforcing bar coupling device has to form a screw portion by cutting the end of the rebar, so that the number of processes for reinforcing bars is increased not only to reduce the work efficiency, but also the structure is complicated and not easy to manufacture. On the other hand, the conventional overlapping joints, pressure welds, mechanical joints, etc., all of the hands of the worker must be crazy to the rebar joint, bar connection work in the narrow space where the worker's hands are difficult to enter the line integrated reinforcing bars It could not be used for joint work of.

Conventionally, reinforcing bar work, formwork assembly, and buried material installation process have been progressed step by step, but the present invention integrates a complex process to promote different processes at the same time to reinforce the air shortening can be achieved quickly and efficiently In addition to providing a reinforcement structure, it eliminates the need for braces or yokes for connecting (assembling) multiple formwork in one piece, and simplifies the process so as not to install a separate formwork fixture such as form tie, thereby improving workability, saving material, and reducing air. Its purpose is to provide formwork integrated reinforcing bar reinforcement structure that can be configured to increase work efficiency by reducing construction cost.

In addition, the present invention provides a pre-assembled rebar vertical connection structure and a pre-assembled rebar vertical connection method for improving the workability of the reinforcing bar connection work to be able to easily connect the reinforcing bars and reinforcement even in a space that does not reach the operator's hands without rebar joint There is another purpose to provide.

The present invention is to arrange a plurality of ladder truss bar in the horizontal, vertical direction for the reinforcement of the reinforced concrete-like structure to integrate with each other and to be integrated and integrated with the formwork for placing concrete, the ladder type The truss root is composed of two main bars arranged side by side at a predetermined interval and a plurality of connecting bars connected at right angles to the two main bars, and the connecting bar of the horizontal ladder truss is arranged in a plurality of vertical truss bars The connecting roots of the vertical ladder truss muscles are arranged to correspond to the spacing, and the connecting roots of the vertical truss muscles are arranged so as to correspond to a plurality of arrangement intervals of the vertical truss muscles. Both ends of the connecting rod are laterally disposed Die lines are integrated, characterized in that adapted to protrude into the assembly to provide a reinforcement structure.

On the other hand, the present invention, when vertically connecting the vertical ladder truss root of claim 1 pre-assembled to be integrated with the formwork, in the structure for connecting the vertical roots arranged up and down, inserted into the middle of the sleeve having a certain length to the sleeve Lower root fixed by welding at the bottom of the; An upper main rod inserted through an upper end of the sleeve to abut the sleeve integrated main root; And a slow curing agent injected into and fixed in the sleeve; Formwork integrated line assembly reinforcing bars vertical connection structure, characterized in that configured to include.

In addition, the present invention, when vertically connecting the vertical ladder type truss root of claim 1 pre-assembled to be integrated with the formwork, in the method of connecting the vertical root disposed up and down, (a) a sleeve having a pleat formed inside the body Inserting a lower root to the middle of the sleeve, connecting the lower and lower root of the sleeve by welding, and closing the lower end of the sleeve; (b) reinforcing the lower ladder truss muscle including the lower main root to which the sleeve is connected; (c) injecting a slow curing agent into the sleeve; (d) placing an upper ladder truss muscle to the upper end, and inserting the upper main root through the upper end of the sleeve to join the lower main root to cure the slow curing agent; It provides a formwork integrated line assembly reinforcing bars vertical connection method comprising a.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1. Formwork integrated line reinforcement structure.

As shown in FIG. 1, the form integrated line assembly reinforcing bar reinforcement structure according to the present invention has a plurality of ladder truss bars 110 and 120 arranged in a horizontal and vertical direction, and thus the ladder ladder truss bar 120 in a vertical direction is 90 degrees. It is constructed in such a way as to integrate the ladder truss muscle while intersecting by rotating the diagram. The ladder truss bars 110 and 120 are connected to two main bars 111 and 121 arranged side by side at a predetermined interval and a plurality of connecting bars 112 and 122 connected at right angles to the main bars 111 and 121. It is configured to include). The ladder-shaped truss roots 110 and 120 are used to reinforce in the horizontal and vertical directions, respectively. That is, the main root 111 of the horizontal ladder truss bar is used as a horizontal reinforcing bar, the main bar 121 of the vertical ladder truss bar is used as a vertical bar, the connecting bar of the vertical, horizontal ladder truss bar Both 112 and 122 are used as unidirectional horizontal bars.

The connecting root 112 of the horizontal ladder truss muscle is disposed so as to correspond to a plurality of placement intervals of the vertical truss muscle 120, and the connecting muscle 122 of the vertical ladder truss muscle is a horizontal truss muscle ( 110) disposed so as to correspond to a plurality of arrangement intervals, the connecting muscles 112 and 122 of the vertical, horizontal ladder truss muscles should be arranged so as not to be mutually folded. This is to derive the most efficient reinforcement structure of reinforced concrete structure with the minimum amount of rebar. In addition, the horizontal ladder truss bar 110 may constitute a reinforcing bar reinforcement structure arranged at a narrow interval from the bottom of the vertical structure, which is to bear that the concrete placing weight of the vertical structure acts largely to form In order to support large loads, it is necessary to increase the amount of rebars that are horizontally reinforced.

On the other hand, the connecting bars (112, 122) can be configured to both sides protrude in the lateral direction of the cast iron (111, 121) to serve as a formwork (form tie). If threads are formed at both ends of the connecting muscles 112 and 122, the dies can be utilized as form-tie, which is a die fastener, together with a cone-shaped nut.

In order for the vertical and horizontal ladder truss roots 110 and 120 to be connected while crossing each other, the main spacing of the vertical and horizontal ladder truss muscles should be configured differently, as shown in FIG. 1A. By inserting the vertical ladder truss muscle 120 into the horizontal ladder truss muscle 110 using the main spacing of the truss muscle 120 is narrower than the main spacing of the horizontal ladder truss muscle 110 It is convenient to work with the back muscles to take the connecting configuration. Specifically, it is as follows.

(1) A plurality of vertical ladder truss roots 110 in a vertical direction are placed side by side on a pedestal 220 installed on the rotor 210. Thereafter, a plurality of horizontal ladder truss roots 120 are sequentially inserted into the vertical ladder truss roots, and the protruding connecting roots 122 of the vertical ladder truss tuck the main roots 111 of the horizontal ladder truss roots. It is necessary to rotate the vertical ladder-shaped truss root 120 by 90 degrees using the assembly rotating body 210 so as not to be caught to fix it in a predetermined position first. (See Figure 1a)

(2) The rotating body 210 is turned 90 degrees so that the main root 121 of the vertical ladder truss muscle and the connecting root 112 of the horizontal ladder truss muscle abut, and the main root of the horizontal ladder truss muscle 111 ) And the connecting rod 122 of the vertical ladder truss bar in contact with each other to fit each contact to form a reinforcement structure according to the present invention. In this case, the plurality of horizontal ladder truss roots 110 and the plurality of vertical truss roots 120 can be assembled in the field by importing a product that has been precisely processed in the factory in advance, thereby forming a close bond without welding. . (See Figure 1b)

Figures 2a to 2d shows the operation of installing the prefabricated reinforcing bar reinforcement structure in accordance with the present invention integral with the wall formwork and installed in the construction layer.

(1) After installing the rotor and pedestal between the workbench and the workbench, insert several vertical ladder truss bars into the pedestal and place them side by side. Thereafter, a plurality of horizontal ladder truss roots 120 are inserted into the vertical ladder truss roots in sequence. At this time, it is possible to temporarily support the horizontal ladder type truss muscle using a horizontal platform. (See Figure 2a)

(2) Turn the rotating body 90 degrees so that the main root of the vertical ladder truss muscle and the connecting root of the horizontal ladder truss muscle contact each other, and the protruding connection of the main ladder of the horizontal ladder truss muscle and the vertical ladder truss muscle After making contact with the muscles by intersecting each contact to form a reinforcement structure according to the present invention. (See Figure 2b)

(3) Wall formwork is connected to both sides of reinforcing bar structure. At this time, if the connecting muscle is used to protrude in the lateral direction of the main root can be utilized as the formwork (form tie) the connecting muscle. Through this process, reinforcing bars and wall formwork are integrated. (See Figure 1c)

(4) The integrated reinforcing bars and wall formwork shall be lifted and installed on the necessary site and concrete will be poured.

The ladder type truss bar is processed at the factory and brought into the site, and the step of installing the reinforcement and embedding of the ladder type truss bar, and the integrated assembly process of the wall and the slab formwork will be promoted as an independent separate process from the main process of the site. Therefore, since a plurality of processes are simultaneously performed in a separate form without mutual interference, innovative shortening of required air can be achieved.

2. Formwork integrated line vertical rebar structure and vertical connection method

Figure 3 is a schematic diagram of the formwork integrated line assembly rebar vertical connection structure according to the present invention, Figure 4 is a construction site application example of the formwork integrated line assembly rebar vertical connection structure according to the present invention.

Formwork integrated line assembly rebar vertical connection structure according to the present invention is composed of a sleeve 30, the lower freckle 10, the upper freckle 20 and the slow curing agent (40).

The sleeve 30 is a pipe-shaped member having a predetermined length, and the upper and lower freckle 10 and 20 are connected to the sleeve 30 after being inserted into the sleeve 30. Since the sleeve 30 is also eventually embedded in concrete, when the corrugation 32 is formed on the outside of the body, it is possible to obtain the effect of increasing the pullout resistance of the sleeve 30 by the corrugation 32 after reinforcement concrete pouring and curing. have. In addition, when wrinkles are formed in the body of the sleeve, the tensile stress of the reinforcing bar portion due to the curing of the slow curing agent 40 to be described later is increased. In this case, the sleeve 30 can be easily injected with a slow curing agent 40 to be described later by configuring the upper end in the form of a funnel and easily inserting the upper main root 20 of the vertical ladder truss muscle. . On the other hand, due to the use of a slow curing agent, as the curing speed is slowed, there is a time allowance for working without rushing.

The lower freckle 10 and the upper freckle 20 are inserted to the middle of the sleeve 30, respectively, and are then fixed to each other. First, the lower root 20 is inserted into the middle of the sleeve 30 and fixed by welding at the lower end of the sleeve 30. The welding part 31 is formed at the lower end of the sleeve 30 through such welding, and the welding part 31 blocks the lower end of the sleeve 30 in addition to fixing the lower main root 10 with the sleeve 30. It also serves to prevent the slow curing agent 40 from flowing out of the sleeve 30 when the curing agent 40 is injected into the sleeve 30. This welding operation can be mass-produced while combining the lower freckle 10 and the sleeve 30 through factory welding.

As described above, after welding the lower freckle 10 and the sleeve 30 by welding, the slow curing agent 40 is injected into the sleeve 30, and the upper freckle 20 before the slow curing agent 40 is cured. ) Is inserted into the sleeve 30 to be fixed in contact with the lower freckle 10.

The slow curing agent 40 refers to a curing agent having a certain amount of time from when exposed to air to completely cured, which is cured before inserting the upper main root 20 after being injected into the sleeve 30 Because it must not be.

On the other hand, the lower main rod 10 and the upper main rod 20 is a slow curing agent (rib 12, 22) using a deformed steel bar that is formed with the nodes 12, 22 and ribs 11, 21 in the body ( After hardening of 40), there is an effect that the tensile stress of the upper and lower roots connected is increased.

In addition, the formwork integrated reinforcing bar connection method according to the present invention is as follows.

(a) step: inserting the deformed steel reinforcement to the middle of the sleeve in the sleeve 30, the wrinkles 32 are formed in the body, connecting the lower end of the sleeve and the deformed steel by welding, and closing the lower end of the sleeve.

Step (b) is a step of stretching the vertical ladder-type truss muscle including the lower main root 10 of the step (a), the sleeve (30) to the upper end is the step of reinforcement.

(c) step: injecting the slow curing agent 40 in the sleeve (30).

(d) step: inserting the upper freckle through the upper end of the sleeve and then joined with the lower freckle 10 to cure the slow curing agent.

On the other hand, the upper and lower main root is preferably using a deformed reinforcing bar.

At this time, the step (a) further comprises the step of closing the sleeve 30 by closing the top of the sleeve 30 with a stopper 50, the step (c) before the slow curing agent 40 is injected into the sleeve Reinforcing bar connection method characterized in that it further comprises a step of removing the stopper 50 can be used. The stopper 50 serves to prevent foreign matter from entering the sleeve 30 in a process such as reinforcing the bar, or placing the vertical structure concrete.

As shown in Figure 4 by using the reinforcing bar is inserted into the sleeve when the lower structure of the reinforced concrete structure building integrated into the vertical reinforcement of the lower structure, by using the reinforcing bars of the lower structure, the vertical reinforcement of the lower structure and the vertical reinforcement of the upper structure When connecting the formwork integrated line assembly reinforcing bar vertical connecting structure and formwork integrated line assembly reinforcing bar vertical connection method can be utilized.

Using the pre-assembled reinforcement structure according to the present invention has the following effects.

First, the connecting rods of the vertical and horizontal ladder truss bars can be staggered so as not to overlap each other, thereby preventing unnecessary waste of reinforcing bars.

Secondly, since the connection root of the ladder-type truss muscle is used as the formwork, the formwork installation, which is a separate formwork, can be omitted.

Third, since the formwork and the reinforcing bar can be combined through the connecting bar of the ladder-type truss bar, the work of fixing the brace or the yoke on the back of the formwork is unnecessary.

Fourth, in consideration of the pressure received by the formwork can be adjusted economically and efficiently by adjusting the placement interval of the ladder ladder truss in the horizontal direction.

Fifth, assembling the large formwork integrated with the pre-assembled reinforcing bar and constructing the laminated reinforced concrete structure, the other processes (for example, installing temporary construction, concrete placing / curing) It can be done in conjunction with, which will revolutionize the air.

According to the present invention, formwork integrated line assembly rebar vertical connection structure and formwork integrated line assembly rebar vertical connection method has the following effects.

First, it is easy to install in a confined space where the operator's hand cannot enter compared to the overlapped joints, pressure welds, mechanical joints, etc., which is the conventional reinforcing bar connection structure, and the working time is shortened.

Second, by using a sleeve formed in the inner and outer pleats, it is possible to increase the tensile strength of the reinforcing bar portion, and to increase the pullout resistance of the reinforcing bar and the sleeve integrated.

Claims (8)

In the reinforcement structure of pre-assembled reinforcing bars that can be integrated with each other by horizontally and vertically arranging a plurality of ladder truss bars to reinforce the reinforced concrete structure, and integrated with the formwork for concrete placing, The ladder truss muscle is composed of two main steel bars arranged side by side with a predetermined interval and a plurality of connecting bars connected to form a right angle with the two main steel bars, The connecting muscles of the horizontal ladder truss muscles are arranged to correspond to a plurality of placement intervals of the vertical truss muscles, and the connecting muscles of the vertical ladder truss muscles are arranged to correspond to the plural spaces of the horizontal truss muscles, The connecting roots of the vertical and horizontal ladder truss muscles are staggered so as not to be mutually folded, Forming integrated line assembly reinforcement structure, characterized in that both ends of the connecting bar is configured to protrude in the lateral direction of the main reinforcing bar. In claim 1, Forming integrated line assembly reinforcement structure, characterized in that both ends of the connecting muscle is formed with a thread. In claim 2, Forming line assembly reinforcement structure, characterized in that the main spacing of the vertical ladder-shaped truss muscle is narrower than the main spacing of the horizontal ladder truss. The method according to any one of claims 1 to 3, The horizontal ladder type truss bar is a formwork integrated line reinforcement structure, characterized in that arranged in a narrow gap at the bottom of the vertical structure. In the structure of connecting the vertical roots arranged vertically, when vertically connecting the vertical ladder truss root of claim 1 pre-assembled to be integrated with the formwork, A lower root inserted into the middle of the sleeve having a predetermined length and fixed by welding at the bottom of the sleeve; An upper main rod inserted through an upper end of the sleeve to abut the sleeve integrated main root; And A slow curing agent injected into and fixed in the sleeve; Formwork integrated line assembly rebar vertical connection structure, characterized in that comprising a. In claim 5, The sleeve is a vertical integration structure of the formwork integrated line assembly reinforcing bar, characterized in that the wrinkles are formed inside the body. In claim 6, Forming line integrated reinforcing bar vertical connecting structure, characterized in that the top is formed in the shape of the funnel funnel. In the method of connecting the vertically placed vertical roots when vertically connecting the vertical ladder truss root of claim 1 to be integrated with the formwork, (a) inserting a lower main root to the middle of the sleeve into a sleeve having wrinkles formed in the body, connecting the lower main root and the lower main root of the sleeve by welding, and closing the lower end of the sleeve; (b) reinforcing the lower ladder truss muscle including the lower main root to which the sleeve is connected; (c) injecting a slow curing agent into the sleeve; (d) placing an upper ladder truss muscle to the upper end, and inserting the upper main root through the upper end of the sleeve to join the lower main root to cure the slow curing agent; Formwork integrated line assembly rebar vertical connection method comprising a.

Images